This drama is based on Hisaya Nakajo‘s manga series “Hana Kimi“ which was published by Hakusensha from 1996 to 2004.
The series centers on Goo Joo Hee (Choi Seol Ri),
a Korean girl who lives in the United States. One day, she sees a track
and field competition on TV, and becomes attracted to one of the high
jump competitors, Kang Tae Joon (Min Ho).
She begins to idolize the young athlete and eventually transfers to
Korea to attend the same school that Tae Joon attends after he suffers
an accident that could potentially end his career. However, Tae Joon
attends an all-boys high school and Jae Hee must disguise herself as a
boy to enter.